1; RUN: llc < %s -march=avr | FileCheck %s
2
3; CHECK-LABEL: relax_breq
4; CHECK: cpi     r{{[0-9]+}}, 0
5; CHECK: brne    .LBB0_1
6; CHECK: rjmp    .LBB0_2
7; .LBB0_1:
8
9define i8 @relax_breq(i1 %a) {
10entry-block:
11  br i1 %a, label %hello, label %finished
12
13hello:
14  call void asm sideeffect "nop", ""()
15  call void asm sideeffect "nop", ""()
16  call void asm sideeffect "nop", ""()
17  call void asm sideeffect "nop", ""()
18  call void asm sideeffect "nop", ""()
19  call void asm sideeffect "nop", ""()
20  call void asm sideeffect "nop", ""()
21  call void asm sideeffect "nop", ""()
22  call void asm sideeffect "nop", ""()
23  call void asm sideeffect "nop", ""()
24  call void asm sideeffect "nop", ""()
25  call void asm sideeffect "nop", ""()
26  call void asm sideeffect "nop", ""()
27  call void asm sideeffect "nop", ""()
28  call void asm sideeffect "nop", ""()
29  call void asm sideeffect "nop", ""()
30  call void asm sideeffect "nop", ""()
31  call void asm sideeffect "nop", ""()
32  call void asm sideeffect "nop", ""()
33  call void asm sideeffect "nop", ""()
34  call void asm sideeffect "nop", ""()
35  call void asm sideeffect "nop", ""()
36  call void asm sideeffect "nop", ""()
37  call void asm sideeffect "nop", ""()
38  call void asm sideeffect "nop", ""()
39  call void asm sideeffect "nop", ""()
40  call void asm sideeffect "nop", ""()
41  call void asm sideeffect "nop", ""()
42  call void asm sideeffect "nop", ""()
43  call void asm sideeffect "nop", ""()
44  call void asm sideeffect "nop", ""()
45  call void asm sideeffect "nop", ""()
46  call void asm sideeffect "nop", ""()
47  call void asm sideeffect "nop", ""()
48  call void asm sideeffect "nop", ""()
49  call void asm sideeffect "nop", ""()
50  call void asm sideeffect "nop", ""()
51  call void asm sideeffect "nop", ""()
52  call void asm sideeffect "nop", ""()
53  call void asm sideeffect "nop", ""()
54  call void asm sideeffect "nop", ""()
55  call void asm sideeffect "nop", ""()
56  call void asm sideeffect "nop", ""()
57  call void asm sideeffect "nop", ""()
58  call void asm sideeffect "nop", ""()
59  call void asm sideeffect "nop", ""()
60  call void asm sideeffect "nop", ""()
61  call void asm sideeffect "nop", ""()
62  call void asm sideeffect "nop", ""()
63  call void asm sideeffect "nop", ""()
64  br label %finished
65finished:
66  ret i8 3
67}
68
69; CHECK-LABEL: no_relax_breq
70; CHECK: cpi     r{{[0-9]+}}, 0
71; CHECK: breq    [[END_BB:.LBB[0-9]+_[0-9]+]]
72; CHECK: nop
73; ...
74; .LBB0_1:
75define i8 @no_relax_breq(i1 %a) {
76entry-block:
77  br i1 %a, label %hello, label %finished
78
79hello:
80  ; There are not enough NOPs to require relaxation.
81  call void asm sideeffect "nop", ""()
82  call void asm sideeffect "nop", ""()
83  call void asm sideeffect "nop", ""()
84  call void asm sideeffect "nop", ""()
85  call void asm sideeffect "nop", ""()
86  call void asm sideeffect "nop", ""()
87  call void asm sideeffect "nop", ""()
88  call void asm sideeffect "nop", ""()
89  call void asm sideeffect "nop", ""()
90  call void asm sideeffect "nop", ""()
91  call void asm sideeffect "nop", ""()
92  br label %finished
93finished:
94  ret i8 3
95}
96
97